Exogenous glutathione maintains the postharvest quality of mango fruit by modulating the ascorbate-glutathione cycle
文献类型： 外文期刊
作者： Zhou, Yan 1 ; Liu, Jiameng 2 ; Zhuo, Qiongyi 1 ; Zhang, Keying 1 ; Yan, Jielin 1 ; Tang, Bingmei 1 ; Wei, Xiaoyun 1 ; Lin, Lijing 2 ; Liu, Kaidong 1 ;
作者机构： 1.Lingnan Normal Univ, Life Sci & Technol Sch, Zhanjiang, Peoples R China
2.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Hainan Key Lab Storage & Proc Fruits & Vegetables, Zhanjiang, Peoples R China
关键词： Mango; Glutathione; Reactive oxygen species; Antioxidant; Fruit quality
期刊名称：PEERJ （ 影响因子：2.7； 五年影响因子：3.1 ）
ISSN： 2167-8359
年卷期： 2023 年 11 卷
页码：
收录情况： SCI
摘要： Background: Mango fruit is prone to decay after harvest and premature senescence, which significantly lowers its quality and commercial value.Methods: The mango fruit (Mangifera indica L.cv. Guixiang) was treated with 0 (control), 2, 5, and 8 mM of reduced glutathione (GSH) after harvest. The fruit was stored at 25 +/- 1 degrees C for 12 days to observe the changes in the antioxidant capacity and postharvest quality. Results: Compared with the control, the 5 mM GSH treatment significantly decreased the weight loss by 44.0% and 24.4%, total soluble solids content by 25.1% and 4.5%, and soluble sugar content by 19.0% and 27.0%. Conversely, the 5 mM GSH treatment increased the firmness by 25.9% and 30.7% on days 4 and 8, respectively, and the titratable acidity content by 115.1% on day 8. Additionally, the 5 mM GSH treatment decreased the malondialdehyde and hydrogen peroxide contents and improved the antioxidant capacity of mango fruit by increasing the superoxide dismutase and peroxidase activities and upregulating the expression of the encoding genes. Meanwhile, the higher levels of monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase enzyme activities and gene expressions accelerated the AsA-GSH cycle, thereby increasing the accumulation of AsA and GSH and maintaining the redox balance.Conclusions: Overall, the experimental results suggest that 5 mM GSH maintains high antioxidant capacity and postharvest quality of mangoes and can use as an effective preservation technique for postharvest mangoes.
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